<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>单位</title>
<style>
* {
    padding: 0;
    margin: 0;
}
.content {
    width: 10vmax;
    height: 10vh;
    font-size: 20px;
    background-color: #258BD6;
}
</style>
</head>
<body>
    <div class="content"></div>
</body>
</html>